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- Increase the scope of the source object lock in vm_map_copy_entry().

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This commit is contained in:
Alan Cox 2003-11-03 00:59:54 +00:00
parent 806a364b8b
commit a89c6258bb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=121919
1 changed files with 3 additions and 5 deletions
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8
sys/vm/vm_map.c
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@ -2356,20 +2356,18 @@ vm_map_copy_entry(
* Make a copy of the object.
*/
if ((src_object = src_entry->object.vm_object) != NULL) {
VM_OBJECT_LOCK(src_object);
if ((src_object->handle == NULL) &&
(src_object->type == OBJT_DEFAULT ||
src_object->type == OBJT_SWAP)) {
VM_OBJECT_LOCK(src_object);
vm_object_collapse(src_object);
VM_OBJECT_UNLOCK(src_object);
if ((src_object->flags & (OBJ_NOSPLIT|OBJ_ONEMAPPING)) == OBJ_ONEMAPPING) {
VM_OBJECT_UNLOCK(src_object);
vm_object_split(src_entry);
src_object = src_entry->object.vm_object;
VM_OBJECT_LOCK(src_object);
}
}
VM_OBJECT_LOCK(src_object);
vm_object_reference_locked(src_object);
vm_object_clear_flag(src_object, OBJ_ONEMAPPING);
VM_OBJECT_UNLOCK(src_object);